[asterisk-users] Bandwidth requirements

[hugolivude]

Hi,

Age old question it seems but I haven't been able to get a handle on it
yet.  Let's assume I'm using a g729 codec.  If I wanted to handle 20
simultaneous calls, how much bandwidth would I need?  Is there a general
formula for this?

I tried this caluclator:
 http://www.voip-calculator.com/calculator/eipb/

I wasn't sure what "Packet Duration to select so I took the default 20ms (2
samples) - whatever that means.  I plugged in 5 for the BHT (20 customers,
each getting 3 X 5 minute calls/hour = 5 Erlangs) and the default 0.01 for
the Blocking.  It worked out to 264 kbps.  Does this sound reasonable?  If
so great!  A business DSL could support this.

Comments welcome!

Cheers,
 H
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